Question

我想保存这本词典

data = { yaml: { l: 'hi\nif x = y:\n  print z\n' } }

在YAML中使用Python。当我使用yaml.dump(data, default_flow_style=False)时，输出为：

yaml: 
  l: "hi\nif x = y:\n  print z\n"

但我知道YAML有这种格式：

yaml: 
  l:
    |
    hi
    if x = y:
      print z

如何以上述格式输出输出？

Answer 1

尝试使用YAML标量：

YAML Scalar

import yaml
from collections import OrderedDict    

class literal(str): pass

def literal_presenter(dumper, data):
    return dumper.represent_scalar('tag:yaml.org,2002:str', data, style='|')
yaml.add_representer(literal, literal_presenter)

def ordered_dict_presenter(dumper, data):
    return dumper.represent_dict(data.items())
yaml.add_representer(OrderedDict, ordered_dict_presenter)

d_temp = OrderedDict(l=literal('hi\nif x = y:\n print z\n'))
d = OrderedDict(yaml=literal(yaml.dump(d_temp)))
print(yaml.dump(d))

<强>输出：

 yaml: |
      l: |
        hi
        if x = y:
         print z

希望它适合你...

在PyYaml输出文件中设置字符串的格式？

1 个答案: